Razer RC30-0248 80Wh Replacement Battery — A Step-by-Step Buying Guide for Blade 15 (2018–2019)

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If your Razer Blade 15 is throttling, shutting down at 20–30%, or swelling the palm rest, the battery is the likely culprit. This guide walks you through the entire shopping flow—from confirming compatibility to checkout—so you can order the right Razer RC30-0248 80Wh battery with confidence.

Who this battery is for

  • Owners of Razer Blade 15 Advanced (2018–2019) and select Blade 15 variants that shipped with an 80Wh pack.
  • Users seeing rapid percentage drops, unexpected shutdowns, or battery swelling alerts in Synapse/Windows.
  • Gamers and creators who want the original energy headroom (80Wh) restored for mobile sessions.

Step 1 — Diagnose before you shop

  1. Check Windows battery health: powercfg /batteryreport (Run as Administrator) and review Full Charge Capacity vs. Design Capacity.
  2. Inspect physically: If the chassis won’t sit flat or the trackpad lifts, stop using and replace immediately.
  3. Rule out adapters: If the laptop runs fine on AC but dies off-plug, the battery is the bottleneck.

Step 2 — Confirm compatibility (the most important part)

You can verify fit in two ways. Use either a battery part number (P/N) from your old pack or your laptop’s exact model code.

✔ Compatible Battery Part Numbers

  • Razer RC30-0248 (80Wh)
  • 4ICP4/55/162
  • 4ICP4/56/162

✔ Compatible Laptop Models (Blade 15 family)

Selected highlights below; see product page for the full mapping.

  • Blade 15 Advanced 2018 RZ09-0238x
  • Blade 15 Advanced 2019 RZ09-0288x / RZ09-0301x / RZ09-0313x
  • Blade 15 RZ09-02385E71-R3U1, RZ09-02385E92-R341/R3U1, RZ09-02385EM2-R3U1
  • Blade 15 RZ09-02386E52-R3U1, RZ09-02386E91/92-R3U1, RZ09-02386E92-R3B1
  • Blade 15 RZ09-02386W52/W91/W92-R3W1
  • Blade 15 RZ09-02886 / 02887 / 02888 (multiple suffixes: MSU1, R341, R3B1, R3E1, R3G1, R3J1, R3N1, R3U1, R3W1, EM2-R3U1, etc.)
  • Blade 15 RZ09-03017 (E01/E02/EM2/EM8 with suffixes R341, R3B1, R3E1, R3G1, R3J1, R3N1, R3U1, R3W1)
  • Blade 15 RZ09-03018 (E02/E52/W02/W52 with suffixes R341, R3B1, R3E1, R3G1, R3J1, R3N1, R3U1, R3W1)
  • Blade 15 RZ09-03135 (EM3/GM3/WM3; Studio Edition 2019)
  • Blade 15 RZ09-03137 (E02 with R341/R3B1/R3E1/R3G1/R3J1/R3N1/R3U1/R3W1)
  • RZ09-02386, RZ09-02486

Tip: Your exact code is on the bottom cover label (e.g., RZ09-03017E02-R3U1). If your code appears above, you’re good to go. Still unsure? Use the product page’s contact option to confirm fit before purchase.

Step 3 — Check the key specs that matter

  • Capacity: 80Wh (restores the Blade’s intended runtime window for 2018–2019 Advanced units).
  • Chemistry & cells: Premium Li-ion cells, smart BMS, and protection for over-charge/over-current/over-temp.
  • Connector & fit: Drop-in pack designed for the Blade 15 battery bay; no firmware mods required.

Full technical details (dimensions, voltage, contents-of-box) are listed on the product page.

Step 4 — What’s in the box

  • 1 × Razer RC30-0248 (80Wh) replacement battery
  • Protection packaging and ESD-safe handling
  • Online support for installation & first-charge calibration

Step 5 — Installation overview (10–25 minutes)

  1. Power down and unplug. Hold power for 15 seconds to discharge.
  2. Remove bottom cover: Torx T5 screws (track lengths); plastic pry tool to lift the panel.
  3. Battery cable first: Disconnect the battery from the board before loosening the pack screws.
  4. Swap the pack and re-connect firmly; avoid pinching the cable.
  5. Reassemble and perform a calibration: charge to 100%, rest 2 hours, discharge to 5–10%, then charge to 100% uninterrupted.

Safety: If your old pack is swollen, do not puncture or compress it. Place it in a fire-safe area and follow local e-waste guidance.

Step 6 — Checkout & delivery tips

  • Address accuracy: Use a location where you (or reception) can sign if required.
  • Payment: Choose your preferred method at checkout; ensure the billing address matches for a smooth authorization.
  • Shipping & returns: Review the store’s Shipping/Returns pages for timelines and warranty coverage before placing your order.

FAQs

Will this 80Wh pack improve my runtime?

Yes—if your existing pack’s health has declined, moving back to a fresh 80Wh restores the original endurance envelope typical of the Blade 15 Advanced 2018–2019 generation.

Is the RC30-0248 backward/forward compatible with other Blade 15 years?

Compatibility is specific. Use the model list above and match your RZ09-xxxxx code, or reference 4ICP4/55/162 or 4ICP4/56/162 on your old pack. When in doubt, ask before buying.

Do I need any special software after installation?

No extra software is required. Windows will recognize the smart BMS automatically. We strongly recommend doing the first-charge calibration cycle.

What if my old battery is swollen?

Stop using the laptop on battery power and replace promptly. Handle gently, avoid pressure, and dispose through local e-waste programs.

How to place your order now

  1. Confirm your exact model (e.g., RZ09-03018E52-R3W1) or your battery P/N (RC30-0248, 4ICP4/55/162, 4ICP4/56/162).
  2. Click the product link below and add to cart.
  3. Complete checkout and keep the confirmation email for tracking/warranty.

Disclaimer: Laptop model names often share chassis across multiple sub-SKUs. Always confirm the exact RZ09 code or the original battery P/N before purchase.

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